#include<stdlib.h>
#include<stdio.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<unistd.h>

int main(int argc,char **argv){

   char *s,a[39] = "who are you";
   char *ss;
   s = a;
   ss = s;
   printf("%s\n",s);
   a[3] = 'x';

   s =s+1;
   printf("%s\n",s);
   printf("%s\n",ss);
   for (size_t i = 0; i < sizeof(a)/sizeof(a[0]); i++)
   {
    printf("%c\n",a[i]);
   }
   




   return 0;
}